Structural coloration by inkjet-printing of optical microcavities and metasurfaces

Sardar, Samim; Wójcik, P.; Kang, Eul Son; Shanker, Ravi; Jonsson, Magnus P.

doi:10.1039/c9tc02796c

Cited by 13 publications

(9 citation statements)

References 57 publications

(61 reference statements)

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“…Inkjet printing provides precise and reproducible deposition of small microdroplets with diameters down to only a few micrometers . The technique also offers flexibility in creating high spatial resolution patterns over large areas at low cost and low material usage, which open avenues for wide-ranging applications in sensing, encryption, and displays. , On the other hand, printing of NP inks that form suitable microdroplets that also self-assemble into microdomes with high NP order is challenging as it requires several different aspects to be jointly fine-tuned. To our knowledge, this was not yet achieved for melanin-based systems.…”

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Noniridescent Biomimetic Photonic Microdomes by Inkjet Printing

et al. 2020

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Certain bird species have evolved spectacular colors that arise from organized nanostructures of melanin. Its high refractive index (∼1.8) and broadband absorptive properties enable vivid structural colors that are nonsusceptible to photobleaching. Mimicking natural melanin structural coloration could enable several important applications, in particular, for noniridescent systems with colors that are independent of incidence angle. Here, we address this by forming melanin photonic crystal microdomes by inkjet printing. Owing to their curved nature, the microdomes exhibit noniridescent vivid structural coloration, tunable throughout the visible range via the size of the nanoparticles. Large-area arrays (>1 cm 2 ) of high-quality photonic microdomes could be printed on both rigid and flexible substrates. Combined with scalable fabrication and the nontoxicity of melanin, the presented photonic microdomes with noniridescent structural coloration may find use in a variety of applications, including sensing, displays, and anticounterfeit holograms.

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Noniridescent Biomimetic Photonic Microdomes by Inkjet Printing

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“…Future systems may benefit from other types of polymers and metasurface designs, 73,120 as well innovative means of production. 129 There are also interesting systems that utilize classical optical microcavities instead of plasmonic metasurfaces, including tuneable devices based on microelectromechanical systems 130 and phase-changing mirrors. 131 Brightness, contrast, chromaticity, viewing angles and power consumption are some of the key parameters for colour displays 48 .…”

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Hybrid plasmonic metasurfaces

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Chaharsoughi

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et al. 2019

Journal of Applied Physics

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Plasmonic metasurfaces based on ensembles of distributed metallic nanostructures can absorb, scatter and in other ways shape light at the nanoscale. Forming hybrid plasmonic metasurfaces by combination with other materials opens up for new research directions and novel applications. This perspective highlights some of the recent advancements in this vibrant research field. Particular emphasis is put on hybrid plasmonic metasurfaces comprising organic materials and on concepts related to switchable surfaces, light-to-heat conversion, and hybridized light-matter states based on strong coupling.

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“…One of these fields is the electronic display technology, where perfect control on colour generation is essential, and for this reason, plasmonic structural colours have received great attention 2 . There are different techniques to fabricate these plasmonic structural colours, such as electron beam 3 or laser lithography 4 , focused ion beam 5 , colloidal self-assembly 6 , inkjet printing 7 , anodization 8 , etc. This last approach, when made of aluminium, makes it possible to obtain anodic aluminium oxide nanostructures.…”

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confidence: 99%